Flexible busbar with multi-function layers

Abstract

A flexible conductive layer is provided with bending parts for alleviating the expansion force of batteries. It includes multiple layers of stacked conductive layers, with bending parts formed inside the conductive layers to form the bending parts, and intervals set between the bending parts of adjacent conductive layers. The structure is simple, and is formed by stacking multiple layers of conductive layers. The conductive layers can be produced using roll materials and fully automatic circular blade/laser cutting machines, and subsequent processes such as attaching insulation layers can be fully automated, saving labor costs and increasing production efficiency.

What is claimed is: 
     
         1 . A flexible conductive layer, comprising:
 conductive layers stacked together, each of the conductive layers including a bend formed therein that creates a bending part, wherein the bends alleviate an expansion force of batteries to which the conductive layers are coupled.   
     
     
         2 . The flexible conductive layer of  claim 1 , wherein the conductive layers are internally provided with bends forming the bending parts. 
     
     
         3 . The flexible conductive layer of  claim 1 , wherein a conductive connection layer is located between adjacent conductive layers. 
     
     
         4 . The flexible conductive layer of  claim 1 , wherein intervals are set between the bending parts of adjacent conductive layers. 
     
     
         5 . The flexible conductive layer of  claim 3 , wherein the conductive connection layer comprises two connection pieces respectively set at both ends between adjacent conductive layers, and the two connection pieces are respectively set on both sides of the bending part, with intervals set between the two connection pieces. 
     
     
         6 . The flexible conductive layer of  claim 5 , wherein the conductive layers are connected together. 
     
     
         7 . The flexible conductive layer of  claim 5 , wherein the conductive connection layer is made of a conductive soldering material. 
     
     
         8 . The flexible conductive layer of  claim 1 , wherein gaps are formed between adjacent bends, and the gaps facilitate heat dissipation of the conductive layers. 
     
     
         9 . The flexible conductive layer of  claim 1 , further comprising:
 a sensing layer which is used to sense a temperature and a voltage of the flexible conductive layer.   
     
     
         10 . The flexible conductive layer of  claim 9 , wherein the sensing layer is electrically connected to a sampling sensing circuit. 
     
     
         11 . The flexible conductive layer of  claim 1 , further comprising:
 a connection layer that is electrically connected to an external circuit.   
     
     
         12 . The flexible conductive layer of  claim 1 , further comprising:
 a durability layer, the durability layer being a steel plate positioned between adjacent conductive layers.   
     
     
         13 . The flexible conductive layer of  claim 1 , further comprising:
 a durability layer, the durability layer being located on an outer side of an outermost conductive layer to improve fatigue durability.